In some parts of the world, the popularity of taking a personal DNA test is increasing. Why do some people want to do this? Is this development positive or negative? Give reasons for your answer.

All Human being characteristics are intertwined in genetic materials that are transmitted by chromosomes from our parents. Our phenotype and many inherited

diseases

, especially cancers and inborn error of metabolism

diseases

can be detected by checking DNA sequences;

that is

called genetic mapping. There are controversies about the pros and cons aspects of

this

trend. On the one hand, awareness of genetic mapping can discover the chance and probability of expression of many ailments.

For example

, early detection of a

cancer

suppressor gene which is called P53 and located on the short arm of the 6th autosomal chromosome can envisage the happening of prostate

cancer

in males.

therefore

men who have the gene can measure some trends,

such

as dietary restrictions and regular follow-ups to prevent or early detection of

cancer

.

Therefore

, genetic mapping can advance survival.

On the other hand

, understanding genetic mapping and DNA sequence which may predict the chance of acquiring

cancer

or fatal

diseases

, produce

the

Correct article usage

a

show examples

high level of stress and possible over-treatment.

For instance

, some female celebrities have done preventive mastectomies due to the detection of breast

cancer

gene 2 in recent years.

This

may be over-treatment because it is not 100% accurate in the early diagnosis of tumours.

This

trend increases the cost and stress for people. To sum up, taking personal DNA mapping is a two-edged sword. In my opinion, in selected persons with a family history of

cancer

or genetic ,

diseases

this

test may be helpful and cost-effective.